#字典的多重嵌套,注意数组，字典和列表的下标起始
userDict = {'name':'mark','age':'25','language':['Chinese','English'],'addr':{'provience':['gs']}}
print(userDict['language'][1])
#多重解析
print(userDict['addr']['provience'][0])
#按key遍历
ks = list(userDict.keys())
ks.sort()
print(ks)
for key in ks:
    print(key,'=>',userDict[key])